I love self checkouts especially if I’m just grabbing a few things because I’ve gotten the rhythm of them down really well and get in and out much more quickly. And in reality they should only be used to offload the customers that meet that exact profile, “just grabbing a few things, not intimidated by tech”
That said the problem is two fold, people do not understand the optimal use case of self checkouts, and two companies see them as a way to cut as much labor as they can which in many cases forces those who don’t meet the ideal criteria into using them.